Added some deeper detail to three roles
\cc @EmilyKyle @kirstenabma @tiffanie Please feel free to make further edits through a merge request. I think these clarifications will be helpful for the team.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
\cc @EmilyKyle @kirstenabma @tiffanie Please feel free to make further edits through a merge request. I think these clarifications will be helpful for the team.